Remover and inserter



Oct. 1, 1940.

Y E. L. RAGLAND REMOVER AND INSERTER Filed Feb. 8 1940 as ea F at 2 Sheets-Sheet J.

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REMOVER AND INSERTER Filed Feb. 8, 1940 2 Sheets-Sheet 2 Patented Oct. 1, 1940 @umrso STATES PATENT OFFICE I REMOVER ANDIINSERTER; I Elbert Lee Ragland, Kermit, Tex, assignor of onefourth to Frank Fletcher" and. one-fourth to Oby Lee Green, Kermit, Tern, and one-fourth m J ohnFreudige'r, Wink, Tex.

Application February 8, 1940, SerialNo. 317,983

4 Claims. (oi. 2945-97) Links 23 at the upper ends, by means of pins 25,

This invention relates to a tool or device for pulling or removing and inserting pump liners.

It is aimed to provide an exceedingly simple efficient, inexpensive and compact puller or tool, one which is self-adjusting so as to engage the liner with maximum advantage in order that maximum power may be applied so that the liner may be removed regardless of a tight fit or sticking, and a construction in which fouling will not result through adding pressure to the same when in operation.

The more specific objects and advantages will become apparent from a consideration of the following description taken in connection with accompanying drawings illustrating an operative embodiment.

In said drawings:

Figure 1 is a view of the puller in elevation;

Figure 2 is a fragmentary View of the puller in elevation, the same being shown in expanded condition to grip a liner;

Figure 3 is a substantially central vertical sectional view taken in the same plane as Figure 2;

Figure 4 is a vertical section taken on the line 4-4 of Figure 3;

Figure 5 is a horizontal section taken on the line 55 of Figure 3;

Figure 6 is a horizontal section taken on the line 66 of Figure 3;

Figure 7 is a plan view of the crosshead detached, and

Figure 8 is a detail section taken on the line 88 of Figure 3.

Referring specifically to the drawings wherein like reference characters designate like or similar parts, a central rod is provided at l which may have screw threads at I I onto which an operating crosshead I2 may be screwed and which may also be engaged by a nut l3 abutting the crosshead or arm I2. At the other end, an enlarged bifurcated portion I4 is provided, a shoulder resulting at the junction of the rod and bifurcated portion. In the bifurcation of said portion M which is designated Hi, the inner ends of oppositely extending links I! are disposed in overlapping relation and pins 18 extend through such links and bifurcated portion I4.

The outer ends of the links H are connected by pivot pins l9 to parallel gripping arms 20, the latter ends extending into enlarged slots at 2| in the gripping arms.

At the upper ends, gripping arms 20 are notched as at 22 and links 23, normally at the reverse angle to the links H, extend into the notches and are pivoted therein by pins 24.

are pivoted in notches 26 of a collar 21 whose movement in one direction is limited by abutment with the aforesaid shoulder I5.

The various pins at l8, I9, 24 and 25 may be 5 of any suitable construction but they preferably have eyes or openings through each end so as to removably receive cotters 28.

Contractile coil springs are employed at 29 which may be fastened to the uppermost pins I9 at their cotters 28 and to the lowermost pin l8 at a cotter thereof. However, when the springs 29 aremore nearly in vertical position, as in Figure 1, they tend to draw the gripping arms 20 toward each other.

Attention is called to the fact, that the clearance provided by the slot l6 and slots 2| and 22 enable compact disposition of the parts and in fact the bars 20 and portion l4 to contact, with the collar 21, sliding away from the shoulder 15, as in Figure 1.

Outwardly extending lugs or flanges 30 may be provided on the gripping bars 20 adjacent their lower ends.

In engaging a liner of an oil well pump or the like, to remove it, the device is inserted into the liner, one hand preferably engaging the collar 21 and the other hand engaging the rod l0 so that they may be moved relatively to facilitate insertion, following which the collar 21 is manually released and the springs 29 automatically position and expand the arms or bars 20 so that they grip the liner. Incidental to pulling the rod II], it will be realized that such action tends to move the links I! to the horizontal and to bind them or tightly engage them with the liner.

The tool is useful not only as a puller in removing a liner but it is also useful in inserting a liner into the pump. In the latter use, the tool is reversed, with the crossbar l2 and nut l3 removed and the rod l0 insertedthrough the stuffing box which is originally occupied by the piston rod. This is advantageous since it is necessary to remove the piston rod and swab rubber assembly before removing a liner. The tool is simply operated in the reverse manner to that for pulling, when inserting a liner.

Various changes may be resorted to provided they fall within the spirit and scope of the invention.

I claim as my invention:

1. A liner puller comprising a rod, a collar slidable on the rod, gripping members on opposite sides of the rod, links pivoted to the collar and to the gripping members, links pivoted to the gripping members and to the rod, whereby the gripping members may contract and expand with respect to the rod, said rod and gripping members being slotted to receive the links so that the gripping members may be moved relatively close to the rod.

2. A liner puller comprising a rod having a shoulder, a collar slidable on the rod and engageable with the shoulder, gripping members on opposite sides of the rod, links pivoted to the collar and to the gripping members, links pivoted to the gripping members and to the rod, whereby the gripping members may contract and expand with respect to the rod, said rod and gripping members being slotted to receive, the links so that the gripping members may be moved relatively close to the rod. p 7

3. A liner puller comprising a rod; '-a collar slidable on the rod, gripping members on opposite sides of the rod, links pivoted to the collar and to the gripping members, links pivoted to the gripping members and to the rod, whereby the gripping members may contract and expand with respect to the rod, the pivots for the links consisting of pins, cotters passing through the opposite end portions of the pins and contractile spring means fastened to certain of the cotters. 4. A liner puller comprising a rod having a shoulder, a collar slidable on the rod and engageable with the shoulder, gripping members on opposite sides of the rod, links pivoted to the collar and to, the gripping members, links pivoted to the gripping members and to the rod, whereby the gripping members may contract and expand with respect to the rod, the pivots for the links consisting of pins, cotters passing through the opposite end portions of the pins, and springs in V relation fastened to certain of the cotters.

ELBERT LEE RAGLAND. 2 

